MAINTAINERS: update IOMAP FILESYSTEM LIBRARY and XFS FILESYSTEM

In IOMAP FILESYSTEM LIBRARY and XFS FILESYSTEM, the M(ail): entry is
redundant with the L(ist): entry, remove the redundant M(ail): entry.

Signed-off-by: Tiezhu Yang <[email protected]>
Reviewed-by: Darrick J. Wong <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Signed-off-by: Dave Chinner <[email protected]>

Author: seehearfeel

MAINTAINERS

@@ -10238,8 +10238,6 @@ F:	drivers/net/ethernet/sgi/ioc3-eth.c
 IOMAP FILESYSTEM LIBRARY
 M:	Christoph Hellwig <[email protected]>
 M:	Darrick J. Wong <[email protected]>
-M:	[email protected]
-M:	[email protected]
 L:	[email protected]
 L:	[email protected]
 S:	Supported
@@ -21596,7 +21594,6 @@ F:	drivers/xen/*swiotlb*
 XFS FILESYSTEM
 C:	irc://irc.oftc.net/xfs
 M:	Darrick J. Wong <[email protected]>
-M:	[email protected]
 L:	[email protected]
 S:	Supported
 W:	http://xfs.org/